Apron-guiding device.



F. G. SARGENT.

APRON GUIDING DEVICE.

APPLICATION FILED NOV.20. 1916.

1522x359 Patented May 29 1917.

S F G $212967??? .By/Y/forngtgc FREDERICK Gr. SARGENT, 0F WESTFORD, MASSACHUSETTS, ASSIGNOB TO C. G. SARGENTS SONS CORPORATION, OF GRANITEVILLE, lviASSACI-IUSETTS, A CORPORATION OF MASSACHUSETTS.

APRON-GUIDING DEVICE.

Application filed November 20, 1916.

To all whom it may concern:

Be it known that T, Fnnnnnron G. SAR- GENT, a citizen of the United States, residing at "Westford, in the county of MiddleseX and State of Massachusetts, have invented a new and useful Apron-Guiding Device, of which the following is a specification.

This invention relates to an apron guiding device of the type referred to in my Patent No. 1,096,268, patented May 12, 1914;.

The principal objects of this invention are to secure the results specified in that patent, and to do it in a simpler and more efficient manner.

Reference is to be had to the accompanying drawings in which- Figure 1 is a plan of the apron of a drier showing a preferred embodiment of my invention, the supporting frame appearing in section;

Fig. 2 is a side elevation of the same;

Fig. 3 is a sectional view on the line 33 of Fig. 1, and

Fig. 4: is an enlarged sectional view on the line H of Fig. 1.

As in my above mentioned patent the device is shown as applied to a drier having a frame 10 and a transverse shaft 11 at each end for supporting the drums 12 for carry ing the apron 13. The shaft 11 is provided with self alining bearings it at each end. On each of these hearings is a bushing 15 adapted to turn about the shaft as a center. The bushing is provided with an eccentric circular portion 17 within which the bearing 14 is supported. The eccentric portion 17 of the bushing is journaled in a hub 19 which is mounted on a slide 20 adjustably mounted on a bracket 21 fixed to the frame 10. By a screw 22 the slide 20 can be moved back and forth for ordinary adjusting pur poses. However after all hand adjustments are made it is found that the apron sometimes has a tendency to move to one side and the following mechanism is added for the purpose of preventing this.

The frame at a distance from the shaft 11 is provided with a shaft 30 on each side.

Specification of Letters .Patent.

Patented May 29, 1917.

Serial No. 132,337.

This shaft has a bearing on the frame and on the inner side is provided with a conical wheel 31 and on the outer side 'with a sprocket wheel 32. Each sprocket wheel is connected by a chain 33 with a sprocket wheel 3% fixed to the end of one of the bushings 15. The conical wheels 31 are just far enough apart so that normally the apron will not touch them.

In operation the eccentric is set preferably as indicated in 2 and the slide 20 adjusted to any necessary degree of fineness so that the apron normally travels in the central position and does not engage either one of the conical wheels 31. However if it tends to travel to one side it will engage the wheel on that side and rotate it and consequently move the belt 33 so as to swing the eccentric part of the bushing around to the left in Fig. 2 and move that end of the drum back without a fecting the adjustment of the screw 22. This causes the apron to move over the other way and leave that wheel 31 as explained in my above mentioned patent.

In this way it will be seen that the operation is controlled by the edge of the apron .at a distance from'the drum instead of at its surface as in my prior patent. Therefore it is only a bodily shift of the apron that is effective and not every variation on one drum.

Although I have illustrated and described only a single form of the invention I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore I do not wish to be limited to all the details of construction herein shown and described but what I do claim is 1. In a device of the character described,

the combination with a shaft, a drum thereon, and an apron passing over the drum, of a wheel located at a distance from said drum in position to be engaged by the edge of the apron and an eccentric bushing operated by said Wheel for bodily moving the end of the shaft,

2. The combination With a rotary drum, of an endless apron carried thereby, a pair of conical Wheels located at the sides of said apron but far enough apart so that they will not be engaged by the apron normally, an eccentric bushing at each end of the shaft, and means on each eccentric bushing for connecting it with one of said Wll'OlS, whereby upon the turning of one of said Wheels the corresponding eccentric bushing 10 Will be turned.

In testimony whereof I have hereunto affixed my signature.

FREDERICK G. SARGENT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

